Projectile-fuse.



"PATENTED FEB. 10, 1903f G. E. FIEDLE'R. PROJECTILE FUSE. APPLICATION FILED JUNE 19, 1902.

2 SHBETSSHBET 1.

-N'.() MODEL.

' PATENTED FEB. 10, 1903.

V G. E. FIEDLER'. PROJEGTILB FUSE.

APPLICATION FILED JUNE 19, 1902.

2 sHEBTs sHEET 2.

N0 MODEL.

1777/6/25? ll/660% fi dli zulzawwwx %@QMT//%W%Q to Projectile-Fuses, of

' of a spacetapered between the fuse-body shaft and the upper UNITED STATES PATENT OFF-ICE.

Gross EMIL FIEDLER, or SOHMERDA'GERMAN-Y.

PROJ ECTlLE-FU'S E.

SPECIFICATION forming part of Letters Patent No. 720,339, dated February 10, 1903. r

Aopllogtion filed June 19. 1902. Serial No. 112,389. (No modelfiv To all whom it may concern:

Be it known that I, GEORG EMIL FIEDLER,

7 merchant,- a subject of the King of Saxony, re-

int'he Kingdom of Prussiding at Som merda, sia and GermanEmpirahave invented certain new and useful Improvements in or Relating which the following is a specification. My present invention relates to a double fuse, the lower setting portion of which can be adjusted by hand without the aid ofa tool; and its novelty consists in a cylindrieal'ring, being easily fitted'nto the cylindrical portion or widened at its-lower end setting-piece, which ring upon firing and in consequence of its momentum of inertia is driven into the conical portion of thespace and on undergoing a deformation is so held that the setting parts are tightly pressed upon each other and against the touch-plate, and thus are .tightened against each other and secured against rotation. In the drawings are shown two constructions, Figures 1 to7 in which the space between the fusebody' Fig. 3.

' shaft andthe upper setting-piece is narrowed at the lower end of the cylindrical portion,

while in Fig. 8 this portion of the space is shown as widened. Fig. 1- is an outer view of the fuse. Fig. 2 isa'top plan view. Fig.- 3-is a vertical section of the double fuse on the line A B of Fig. 2. Fig. 4 shows the position of the cylindrical locking-ring in the fuse after its deformation. Fig. .5 is aborizontal section of the fuse ,on-the line (1-D of Figs. 6 and 7 'represent longitudinal sections of the locking-ring; and' Fig. 8 is a longitudinal "section of a modified construction of a fuse, showingthe firing-ring before firing. Fig. 9 is a view similar to Fig. ti, showing the firing-ringafter firing. .l

"he double fuse (shown in Figs. 1 to 7) is conically recessed at a certain height a. The

upper setting-piece b is provided with an outwardly-cylindrical and inwardly conical ex: tension or sleeve portion 0, so that the settingpiece provides an equally-dimensioned spacearound the main body of the fuse. In'this space is situated a ring d, of soft materialfor instance, tin, lead, or the like. This ring is before firing situated'n the cylindrical porsetting-piece I;

justable settin being one modificationtion of the space and bears with its'lower end against the upper part of the conical extension'o, as shown in Fig.3. Upon firing the ring dis driven, in consequeuceof its momentum of inertia, the space, and thereby undergoes adeformation and produces a frictional or wedging acfuse-body a and the upper-6o tion between the setting-piece b. In being sodriven it exerts a pressure upon the upper setting piece b andin carrying the latter pressesit upon the lower and the latter upon the touchplate 70, whereby a convenient tightening is attained against the separation of the settingrings, and'at the same time the manually-adthe rotation produced by the shot.' The ring (1, which by its deformation prevents thesetwo actions, is provided with. a recess f for the passage of the fire ofthe time-fuse e.

According to the modified construction illustrated in Figs. 8 and 9 the fuse-body 7c is provided with a cylindrical extension or sleeve portion l. Surrounding this extension or sleeve portion is the lower setting-piece t. The shaft of the fuse in this construction is formed by the extension m of the upper settingpiece b'.- As will be seen from the drawplacement by ings, the shaft m is provided with a conical v At its lower I end below the conical enlargement c the fuse.

enlargement or flared portion 0'.

body shaft'm is screw-threaded to receive the ring 0, which bears against the fuse-body k, as shown, and holds the upper setting-piece and the fuse-body shaft in engagement with the fuse-body. Arranged betweenthe sleeve portion Z of the fuse-body and the comically ting-piece b is the deformable ring cl.

- The operation is principally as follows: When the projectile is discharged, the ring d by the momentum of inertia slides along the shank a of 'the fuse-body in downward direction. The outer and lower edge of this ring strikes immediately at the beginning of the motion against the beveled faces-o or 0/.

(I being deformtoo The lower par-t of the ring able bends inwardly and follows the conical. shape of the plate I) or of the fugebody (t. The ring dis thus bent inward at its loweredge and deformed,-as shown in Fig.7; As

into the conical part of -piece '21 is seen red against dis-fl enlarged fuse-body'shaft m of theupper setthis action takes place almost instantaneously and at any rate coincides with the pressing action of the priming-plate Z) upon the lower plate *5 and of the latter upon the fuselate is owin to the momentum of inertia of the former, the deformation of the ring effects a maintenance of the pressing action of the plates upon the lower parts and for this reason also a complete tightening. The

ring d after the deformation does not allow any backward motion of the plates Z2 and i, which remain during the whole flight of the projectile strongly pressed upon one another and .upon the fuse-plate if they were pre liniinarily depressed by the pressure-screw. Besides a good tightening of the plates the efi ect is obtained that during the rotation of the projectile and in consequence of the pressing action the lower rotary plate 11 cannot move from the adjusted timed position.

Having now particularly described and ascertained the nature of my said invention and in what manner the same is to be performed, I declare that what I-claim isl. A projectile-fuse consisting of a fuse- .hody shaft contracted at one end and en.- larged at the other, a sleeve portion surrounding said fuse-body shaft, the inner wall of said sleeve portion and the outer wall of said fuse-body shaft being substantially parallel,

an adjustable setting-piece surrounding said sleeve portion, and a soft-metal ring located in the upper part of the space between said fuse-body shaft and said sleeve portion which, when the projectile is fired, slides along sai fuse-body shaft and is deformed in the lower part of the space between said fusebody shaft and said sleeve portion, for the purpose specified.

2. A projectile-fuse consisting of a fus:

, body shaft contracted atits lower end, an upis deformed in the lower part of the space between said fuse-body shaft and said sleeve portion, for the purpose specified, and an adjustable setting-piece surrounding said sleeve portion.

In testimony whereof I have hereunto set my hand in presence of two subscribing witnesses.

GEORG EMIL FIEDLER. Witnesses:

MAZ MEYER, ERNEST EBERHARDT. 

